Santiago weather in September (Santiago Metropolitan Region, Chile)

People don't tend to visit Santiago in September since it is known as a chilly month. The average maximum daytime temperature in Santiago in September lies at 6.2°C (43.16°F). The average minimum temperature goes down to around -3.8°C (25.16°F) (often the minimum temperature is noted at night).

Rainfall during September is moderate with an average of 42mm (1.7 inches). There are generally around 3 snowy days. The sun will show itself now and again, with 186 hours of sunshine during the entire month.


Santiago, monthly averages in September

Show in Celsius
Min Temperature 25 °F  
Max Temperature 43 °F  
Chance of Rain 12%  
Precipitation 2 in  
Rainy days 4 days  
Humidity 76% *  
Sunshine 186 hrs *  

Where to stay in Santiago

Where to go in Chile in September

Find out more about the weather in Chile in September and which places have the best weather conditions in this month.

Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

So what to wear in September? Bring a rain jacket in case it rains during your stay. Some years it can also snow this month, so bring gloves or mittens, a scarf and a warm hat.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Outdoor sports

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Santiago.

Our site offers climate and forecast data for almost all countries in the world. Are you going to Chile? On this website you can find historical weather averages for many cities in Chile. Not sure yet where to go? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.